My TT had the Calmini S/R when I got it, with rusty chrome spokes(7") and no name 235s that were weather checked but had 3/4 of the tread left. It had an annoying wobble from 45-55 mph so I checked everything under the the Zuk and all was tight. It turned harder than my pickup also.


I also checked the wheels and tires on a spin balancer, they spun true and were balanced.

The 235s drug through the snow and were killing the clutch so I put 205s on I had off the pickup. Again on the rusty spokes that were painted by now and were spun balanced and check for being straight. My wobble went from 45 to 70 and was worse. The hood even shook.

Both sets of tires showed no weird wear or cupping and less wobble at 30-32 psi than at 20-26 psi. It felt more like they were bouncing rather than side to side wobble. Both sets of tires.

With the reverse on the 7" spokes the tires were outside the flares and threw rocks, mud and snow over the sides and windows.


So I wanted to go with less reverse like these to get them back under the flares.


A salvage yard about 40 miles away said they had 7 of them and would do some horse trading with me for a set of 4. I got there, we went into the yard and they had all been stolen out of the vehicles. GRRR

So I ended up with wheels from a 1998 Sidekick for even less. I went from the salvage yard to a tire shop and got 4 new 215s put on and headed home.

Observation with less offset to the outside.

No wobble up to 80mph
It steers like it has power steering
Even with 30 psi from the tire shop it rides better
I drove home in the rain and the sides are clean and Ican see out of the windows

Observation from 235s (29") to 205s (27")

Gained from 17 mpg to 26 mpg running the mail route
Combo highway but still big hills to climb I get 28 mpg.
 
The new 215s are 27" so I expect the mileage to be the same as the 205s

And the rusty old TT has lighter wheels and some bling 

VERY good info. Thanks, I'm gonna remember this.

Quite welcome, I was really surprised about the steering (I turned in the driveway and almost went into the neighbors yard) it is sooooo much easier to turn. That was a bonus.

I have no idea where the wobble went as the other tires and wheels check out ok, no wheel wobble, no visible belts broken, no lumps and the balance was dead on. The reverse must exaggerate a minor problem I can't find.

I just did a tire rotation for the first time on stock size tires and the steering wheel started rocking back and forth starting at about 50 mph.  I jacked the front up and found that the stock spoke wheels were out of round, same with one wheel in the back.  Swapped in two front tires and wheels from my soft top and it smoothed out.  I think that William from Hawk Suzuki is right when he mentioned that tire changers can sometime bend the rims.  The wheels are from a tintop I gave my son, I swapped the tires and wheels that were on my tintop and when I pulled them off the lug nuts were so tight they gauled the stud threads, the tires were E rated 235-75 R15 that were extremely stiff.  The tire dealer probably bent the rims putting them on, I no longer deal with Les Schwab Tires.  This is the second time they have done bad stuff, the first time was when I bought a 1978 Toyota from a friend that had just had inspect the brakes and on the way home one of the front brake caliper retainer bolts fell out.